So doing the exhaust on my YJ.
AMC V8, current plan is to Y-pipe for single exhaust outlet as i have VERY limited room with the 4-linked rear.

I'm looking at stuffing a nice round body universal catalytic converter under there but i want it to be quiet enough that after a day on the trails i can still hear.
The current cobbled cherry bombs are hella loud.

Would the cat alone quiet the exhaust enough?
I dont have room for a cat and muffler, unless i do a supertrapp end on the turndown or something, but thats too pricey for my POS

I'm running a cat and no muffler, it has a turn down at the axle. I have a 4.0L 5 speed and it is not too loud. I would say it is slightly quieter than a catless flowmaster setup. I wanted to run the cat to cut down on fumes in the cab when running windowless.

Here is a clip where you can here it idleing. It sounds louder in the video than it does in person for some reason.

run a small sized cat and a flowmaster hush power muffler or one of the chambered mufflers that look just like a cherry bomb they are uiet and work well...i believe that you can get them at a good auto parts store

I'm running a cat and no muffler, it has a turn down at the axle. I have a 4.0L 5 speed and it is not too loud. I would say it is slightly quieter than a catless flowmaster setup. I wanted to run the cat to cut down on fumes in the cab when running windowless.

Here is a clip where you can here it idleing. It sounds louder in the video than it does in person for some reason.

A cat doesn't remove fumes just cleans up a byproduct of gas. You will still get co2 in there that is the one that kills.

omg...

Carbon dioxide is all around is and is generated by every living organism on the planet. We breathe it every day in large quantities. Its carbon monoxide that kills, genius.

Convertors do remove fumes. The fumes are the by-product of the gasoline combustion. They get heated to the point that the vast majority of them reconfigure into water vapor. Catalytic Convertors aren't like blowing your pot smoke into a dryer sheet like you do at home before you post nonsense in the Tech Forums here.